Feed-water heater and purifier



(No Model.) 2 Sheets-'Sheet 1.

E. DIEHL. FEED WATER HEATER AND PURIEIER.

Patented June 12,` 1894.

E 'noNALurKosRArHme cnMPANv snlNs'ro (No Model.) 2 Sheets-Sheet 2 P.DIBHL. Y vFEED WATER HEATER AND PURIFIBR.

No. 521,337. Patented June 12, 1894.@

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PATENT Enron@- FRANK DIEHL, OF SHEBOYGAN, WISCONSIN.

FEED-WATER HEATER AAND Pu RIFIER.

SPECIFICATION forming part of Letters Patent/No. 521,337, dated June 12,1894.

Application filed September 4, 1893. Serial No. 4841764. (No model.)

To all whom it may concerm,

Be it known that I, FRANK DIEHL, a citizen of the United States,residing at Sheboygan, in the county of Sheboygan and State ofWisconsin, have invented a new and useful Feed- Water Heater andPurifier, of which the following is a specification.

This invention relates to feed water heaters and purifiers; and it hasfor its object to provide certain improvements in devices of thischaracter whereby the feed water to be pumped into a boiler will notonly be thoroughly heated up to a considerable degree, but will at thesame time be freed from all impurities therein.

To this end the main and primary object of the present invention is toeffect certain improvements in feed water heaters and purifiers so as toinsure an automatic operation thereof, while at the same time attainingwith great efticiencythe purposes for which devices of this characterare used.

With these and other obj ects in view, which will readily appear as thenature of the invention is better understood, the same con. sists in thenovel construction, combination, and arrangement of parts hereinaftermore fully described, illustrated, and claimed.

Referring to the accompanying drawings Figurel is a central verticalsectional View of a combined feed water heater and purifier.

constructed in accordance with this invention. Fig. 2 is a horizontalsectional View on the line tc-- of Fig. 1. Fig. 3 is anenlarged detailsectional View of the automatic feed valve located in the spray pipe.Fig. 4 is a similar View of the automatic trap Valve.

Referring to the accompanying drawings,

I A represents a cylindrical shell or casing inclosed at the top andbottom and supported in a convenient location by suitable supportinglegs a, and said cylindrical shell or casing is provided at suitablepoints in its sides with the manholes a', which provide convenient meansfor gaining ready access to the interior `ofthe shell or casing for thepurpose of repairing or removing any partof the apparatus.

r E .The cylindrical shell or casing of the appa- -ratus is provided atone side and near the lower` end thereof with the steam inlet B,- tolwhich is connecteda suitable pipe for leading the exhaust steam fromthe engine, whereby such exhaust steam maybe utilizedfor heating up thefeed water,which is circulated throughout the interior of the apparatus.The heating 5 5 steam entering through the steam inlet B, first comes incontact with the inclined deflecting plate or disk b, which is arrangedin the lower steam box br', located at the bottom of the shell orcasing. disk b, is arranged at an inclination or an angle within thelower portion of the shell or casing, and extends from a point at oneside of the shell or casing directly over the steam inlet to a pointnear the opposite side,.and

terminates near such opposite side in a depending lip h2, which formsbetween the same and the side of the shell or casing a steam passage b.The steam striking the plate or disk b, is necessarily eliminated of oiland other im- 7o purities carried thereby and which drop into the bottomof the shell or casing as `will be hereinafter described, while theseparated steam passes through the passage b3, and entering the spaceabove the deflecting plate or 7 5 disk h, comes in heating contact withthe bottom of the inclosed water chamber or tank C, and ascends througha series of vertical steam pipes c. yThe vertical steam pipes c, extendentirely through the inclosed water chamber 8c or tank C, from thebottom to the top thereof and are provided at their upper extremitiesabove the said water chamber or tank with the convergent discharge endsc,which jet the steam escaping therefrom vtoward a common point as willbe presently referred to.

The steam passing through the pipes c, necessarily heats up the watercontained in the water chamber or tank after it has worked its way intosuch chamber or tank, and the lat- 9o ter is closed in at the top bythedeclining top or drip apron D, which inclines downwardly fromgthe innersides'of the shell or casing to the central water pipe d. The centralwater pipe d, has its upper end joined with the depressed center of thetop drip apron D, and extends therefrom to a point in close proximity tothe bottom of the water, chamber C, thereby providing means forconducting the feed Water, which runs ol of the apron D, into ro:

said water chamber, from which it is drawn off through the vwater outletd', tothe ordinary pump employed for pumping the feed water into theboiler. Arranged transversely The said deiecting plate or 6o within thelower portion of the water chamber C, is the filter diaphragm E,comprising the upper and lower parallel strainer plates e, and two ormore courses of perforated lilter brick c', clamped between saidstrainer plates. The strainer plates e, are preferably composed of anumber of segmental sections e2, surrounding the Vertical water pipe d,and the vertical steam pipes c, while at the same time being capable ofeasy removal and replacement. The outer and inner edges of the parallelstrainer plates e, are engaged bythe clamp lugs e3, attached to theinner side of the shell or casing, and also the vertical Water pipe d,and the upper one ot said clamp lugs, or more properly rings, isremovably clamped onto the vertical water pipe d, so as to provide forconveniently removing or repairing the filter diaphragm The dispositionof the filter diaphragm E, near to the closed bottom ot' the Waterchamber C, provides a bottom water space e, below such diaphragm andinto which the feed water runs from the lower end of the vertical waterpipe d, and suchwater, rising through the said tilter diaphragm passesinto the main portion of the water chamber or tank in a well filteredcondition and properly puritied, so as to be ready for introduction intothe boiler, and this Water space c, as well as the entire water chambermay be properly drained through the valved blow-off pipe e, connected atits upper end to the bottom of the water chamber and passing out throughthe bottom of the shell or casing A. An overflowing ot the Water chamberC, is prevented by means of an overow siphon F, having its short legarranged inside of the water chamber and depending to a point in Veryclose proximity to the topot the filter diaphragm E, while the long legthereof is arranged outside of the shell or casing to discharge or carryed an overflow, and said si phon is provided with an air or priming cockf, located outside of the shell or casing, and though this siphon isuseful for the purpose noted, still the height of the water in the Waterchamber or tank C, is alwaysindicated by the water gage f', connected toone side ot' the shell or casing and communicating with the interiorofthe Water chamber or tank. The said water chamber or tank is alsoprovided with the capped vent pipes f2, connected to and arising fromthe declining top apron thereof, and opening into the water chamber inorder to provide for the admission of steam into the top portion of thewater chamber above the water therein, whereby the Water may be heldsteady, which would be otherwise it' these vent pipes were not employed,because there is always more or less steam pressure existing in thevertical water pipes d.

In the space between the top apron of the water chamber and the top ofthe shell or casing, theheating exhaust steam and the feed water arebrought into contact with each other so that certain portions ot theexhaust steam will be condensed and utilized as feed water, while thewater introduced into the apparatus will be heated up by the steam tosome degree before it finds its Way into the water chamber or tank C.This space accommodates therein the parallel tilter baskets G. Theparallel filter baskets G, are regularly spaced apart from each otherand are ar ranged in any suitable number between the top of the waterchamber or tank, and the top ot' the inclosiug shell or casing,according to the size of the apparatus, and each of said filter basketscomprises perforated sectional strainer plates g, arranged parallel witheach other and of a similar construction to the strainer plates e,previously referred to. Between the parallel strainer plates g, of eachof the filter baskets G, is placed a suitable filtering medium g',composed of sea grass or any other substance available for this use, andthe outer and inner edges of the said sectional strainer plates g, ot'the lilter baskets are engaged by the clamp lugs g2, attached to theinner side of the shell or casing and also to the short centralsteampipes g3, arranged in a line one above the other and supportedcentrally in position within the shell or casing by suitable hangingWires g4, connected to their upper andlower edges and to the top of theshell or casing. The upper one of the clamp lugs or rings removablyclamped onto the short pipes g3, can be easily adjusted so as to providefor conveniently removing or repairing the filter baskets.

Arranged a suitable distance below the lower ends of the short centralsteam pipes g3, ot' each filter basket, are the curved or concavedbattle plates Il, which serve to throw the steam and dripping Water outtoward the side of the shell or casing, and such baffle plates aresuitably supported in position on the supporting wires h, suitablysuspended from their upper ends and having lower threaded ends passingthrough openings in .said plates and engaged on both sides of saidplates by the clamp nuts h', whereby the baffle plates may be properlysupported and adjusted. It is to be observed that the lower one of theconcaved battle plates Il, is disposed directly over the upperconvergent ends c', of the vertical steam pipes c, and serves to directthe steam issuing from such pipes out toward the inner sides of theshell or casing, While at the top of the shellor cas ing is located alarger concaved baille plate H', which is adjustably supported by thehanging rods h2, directly over the upper one of the lter baskets anddirectly under the top steam escape opening h3, out of which thecompletely utilized exhaust steam finds escape.

The upper larger baille plate ll', serves to throw the steam whichpasses through the upper one of the central steam pipes d, out towardthe inner sides of the shellor` casing in close contact with the upperone of the IOO circular water coils I. The upper one ofthe circularwater coils I is located in the space between the top one of the lterbaskets and water supply for the apparatus are connected together by thecoil connecting pipes i. The convolutions of the several circular watercoils I, are disposed in close proximity to the sides of the shell orcasing, and the upper one of said circular water coils I, is connectedby a coil connecting pipe t', with the top horizontal water coil J. Thetop horizontal water coil J, has the convolutions thereof disposed closeto the top of the shell or casing and is supplied with water through thetop water supply pipe j, leading from a suitable source of water supply.

The water which passes through the top horizontal water coil and theseveral circular watercoils, is necessarily subjected to the heatingaction of the exhaust steam thrown against the coils by the baflieplates, while at the same time the cold coils 'condense some of thesteam, which in its condensed condition works throughv the filterbaskets and into the water chamber or tank C, in the manner alreadydescribed. The circu` lating water passes out from the lower one of thecircular water.coils l, through the vertical spray pipe K, having at itsupper end a perforated nozzle portion Za, which leads into the topportion of the shell or casing and sprays the feed water throughout theentire top portionvof said shell or casing, so that it will be heated bythe exhaust steam and will also work its way through the filter basketsand the filter diaphragm E, into the water chamber or tank from whichitis ultimately drawn out and forced into the boiler.

At a point intermediate of its ends the vertical spray pipe K, isprovided with a valve casing Ze', inside of which is arranged aninclined valve seat k2. A pivoted v'alve L, works at one side of saidvalve seat, and is held normally closed onto the same by the spring Z,loosely connected thereto and to one side of the pipe. The normallyclosed valve L, has connected with one side thereof the jointed togglearms Z', to the joint of which is pivoted the inner end of the slidingrod Z2, working through one side of the valve casing and pivoted at itsouter end to a suitably supported'bell crank lever Z3. One end of thebell crank leverZ, has pivoted to the free arm thereof the upper end ofthe operating wire or rod Z4, the lower end of which is connected to thetioat lever Z5, working through a suitably arranged stufiingbox Z6, inone vside of the shell or casing A, and connected at its inner end to aIfloat Z7, which floats on top'of the water in the water chamber or tankC. Now it will be apparent that as the water lowers in the water chamberor tank C, the `float therein will also lower and communicate motiontothe `spray devices of the apparatus.

several valve connections just described', so that the operating wire orrod Z4, will be shoved up, and through the bell crank Z3, spread apartthe arms Z', thereby throwing the valve L, off of its seat, andpermitting a free flow of water from the water coils into the As thewater in the water chamber resumes its proper level the float Z7, rises,and the valve L, ,is thrown back against its seat, again. turning offthe supply of water.

Returning to the steam entering the shell or casing at the inlet B, itwill be remembered that the detlecting plate b, serves to eliminate` theoil and other greasy matter therefrom, and this oil drips from thedeflecting plate b, onto the oil filter basket M. The oil filter basketM, is arranged transversely in the lower steam box Z9', and comprisesthe parallel strainer` plates m, suitably supported in position in thelower part of the shell or casing and holding in the space therebetweena filtering medium m', of sea grass or other suitable material, so thatthe oil and condensed steam may be readily freed from impurities inpassing therethrough and into the bottom oil chamber O. The oil, beingthe lighter of the two substances, of course floats on top of thecondense'd steam or the water which lies directly at the/bottom of theshell or casing, and this condensed steam or water is automaticallydrawn out of the oil chamber O, through the trap Siphon P, the short legof whichis disposed in very close proximity to the bottom of theinclo'sing shell or casing.

YThe long leg of the trap siphon P, is connected to the upper end of awater trap tank p, andA is provided at a point near to such tank with acheck valve p', which prevents the` steam employed to operate the trapfrom blowing back into the oil chamber. The said water trap is providedwith a valved bottom discharge pipe Q, connected to a conducting pipe q,which leads up to the top of the shell or casing, and projects into thesame so as to discharge the water from the water trap directly back intothe apparatus, so that it may work its way into the water chamberorctank (Las already described. The said water trap tank p, is providedat th'e top and near one side thereof with an off-standing valve casin gR, to which is connectedV the live steam pipe r, and which is providedinside thereof with a valve seat S.' A pivoted valve s, is arranged towork at one side of said Valve seat, and

has loosely connected thereto atoone side aY spring s which serves tonormally hold the valve closed against the seat, and to the oppositsside of said valve is connected one end of one of the jointed togglearms T. To the joint of said toggle arms T, is connected the upper endof the connecting arm t, pivoted at its lower end to an intermediatepoint of the ioat arm t'. The ioat arm t', is pivoted at one end to oneside of the trap tank p, and at its other end to a float U, floatinginside of said tank. The said float U, is provided at IOO ISO

opposite sides thereof with the perforated guide lugs u, which have alimited vertical play between the stops u', on the vertical guide orslide rods V, arranged in opposite sides of the trap. Vhen the water islow in the Water trap, the float is in such a position that theautomatic valve is closed against its seat to prevent the inflow of livesteam, and at this time water runs freely from the oil chamber of theapparatus through the trap siphon P, and into the trap tank. -When a.sufficient quantity of water has accumulated in the trap, the floatrises and opens the valve s, thereby allowing the live steam to enterthe top of the trap. This closes the valve 1J', and shuts olf the trapSiphon, while at the same time forcing the accumulated water out throughthe pipes Q and q, and up into the top of the shell or casing A. Thisautomatic trap device is an important auxiliary to the feed water heaterherein described and provides for a thorough utilization of thecondensed water. s

At any time the oil chamber O, may be drained through the valve drainpipe W, counected to the bottom of the shell or casing A, and theoveriiow escape of the oil from the chamber O, is provided for by theoil-overflow pipe Z which projects through the bott'om of the shell orcasing and up into the same to a point directly under the filter basketM, so

that such pipe will carry off the oil or grease which floats on thewaterafter the Water has risen sufficiently high.

From the foregoing it is thought that the construction, operation andthe many advantages of the herein described feed water heater andpurifier will be readily understood by those skilled in the art withoutfurther description, and I will have it understood that changes in theform, proportion and the minor details of construction may be resortedto without departing from the princi ple or sacrificing any of theadvantages of this invention.

Having thus described the invention, what is claimed, and desired to besecured by Letters Patent, is

l. In a feed water heater, the casing having an upper Water inlet and abottom steam inlet, an inclosed water holding chamber or tank locatedbetween said inlets and having a central inlet pipe opening into thespace above the chamber, and a series of steam pipes passing verticallythrough said water chamber or tank concentric with the central inletpipe and having upper projected discharge ends, substantially as setforth.

2. In a feed water heateig'the shell or casing havingalower steam inlet,an inclosed water chamber or tank arranged inside of said shell orcasing above the steam inlet, aseries of spaced horizontal circularwater coils arranged inside of the shell or casing above said waterchamber, and a spray pipe connected in the circuit of said water coilsand discharging into the top of the shell or casing above the uppermostof said circular coils, substantially as set forth.

3. In a feed water heater and purifier, the casing having a bottom steaminlet and an inclosed water chamber directly above the inlet, a seriesof separated and connected water coils arranged above the water chamber,a spray pipe connected in the circuit of said watereoils, andiilterbaskets alternating with said water coils, substantially as setforth.

4.. In a feed water heater and purifier, the casing, the inclosed waterchamber open at its top a series of steam heating pipes passing upwardlythrough the Water chamber and projecting there-above, an alternateseries of circular water coils and immediately adjacent lter basketslocated above said Water chamber, and a spray pipe leading from thelower one of said water coils, substantially as set forth.

5. In a'combined feed water heater and purifier, the casing having abottom steam inlet, a water chamber arranged above the steam inlet andopen at its top, water supply and filtering devices located above theWater chamber, an oil chamber located at the bottom of the casing, andan automatically operating water trap feeding automatically from thebottom portion of said oil chamber and a conducting pipe leading fromthe discharge of said trap into the top of said casing, substantially asset forth.

6. In a feed water heater and purifier, the casing having a bottom steaminlet, an inclosed water chamber arranged above the said inlet and openat its top, a series of steam pipes passing vertically through the waterchamber and having upper discharge ends projecting thereabove, analternate series of water coils and immediately adjacent filter basketslocated above the water chamber, a spray pipe connected with the lowerone of said water coils and provided with an automatic float actuatedfeed valve, an oil chamber arranged below the steam inlet, and anautomatic water trap feeding automatically from the bottom of the oilchamber and a conducting pipe connected with said water trap anddischarging into the top of the casing, substantially as set forth.

7. In a feed water heater and purilier,'the casing having a bottom steaminlet, an inclosed water chamber arranged above the steam inlet andprovided with a declining top apron and a vertical water pipe leadingfrom the center of said apron to a point near the bottom of the chamber,vertical steam pipes passing entirely through the water chamber anddischarging above the same, a filter diaphragm arranged transverselywithin the water chamber near its bottom, an alternate series of watercoils and filter baskets located above said water chamber, said filterbaskets having short central steam pipes, and a feed spray pipeconnected with one of said water coils and discharging into the top ofsaid casing, substantially as set forth.

TIO

8. In a feed Water heater and purifier, the casing having a bottom steaminlet, a closed water chamber arranged above the steam inlet andprovided with a declining top apron, a vertical water pipe leading fromthe center of said apron to a point near the bottom of the chamber and aside outlet pipe, vertical steam pipes passing through the waterchamber, an overflow siphon having its short leg depending inside ofsaid water chamber, a transverse filter diaphragm. surrounding the lowerend of the vertical water pipe inside of the water chamber, and watersupply and filter devices located above said water chamber,substantially as set forth.

9. In a feed Water heater and purifier, the combination with the watersupply and filtering devices, and the water collecting chamber having avertical water supply tube or pipe; of a filter diaphragm surroundingthe lower p ends of said vertical water pipe within the water chamberand comprising suitably supported parallel sectional perforated strainerplates, and separate courses of perforated filter brick arranged betweensaid strainer plates, substantially as set forth.

10. In a feed Water heater and purifier, the

casing having a bottom steam inlet, the inclosed water chamberlocatedabovesaid steam inlet and having top vent pipes and a vertical watersupply pipe leading there-into, separate spaced filter baskets suitablysupported within the casing above the water chamber and having shortcentral steam pipes, said filter baskets comprising parallel strainerplates and filtering material there-between, the casing outlet at thetop, suitably supported concaved baffle plates, arranged below said topoutlet and below the central steam pipes of said filter baskets, aseries of circular connected water coils alternating with said filterbaskets, a horizontal top water coil connected with the water supply inthe upper one of said circular coils, and the spray pipe connected tothe lower one of said circular coils andV discharging into the top ofthe casing over the upper filter basket, substantially as set forth.

11. In a feed water heater, the casing, the inclosed water chamber openat its top, an alternate series of water coils and filter basketslocated above said water chamber, 'a spray termediate valve casingprovided with an inclined seat, a normally spring-closed valve arrangedat one side of said seat, suitably arranged lever devices for openingsaid valve, a fioat working inside of said water chamber, and suitableconnections between said float and said lever devices, substantially asset forth.

12. In a feed water heater and purifier, the inclosed water chamberhaving a side outlet and a vertical water pipe, an inclined deflectingplate arranged within the casing below the water chamber and having adepending lip at one end, said plate being arranged above the steaminlet of the casing, vertical water pipes extending through the waterchamber and having upper convergent ends, spray and lter devices locatedabove and discharging into the water chamber, and suitably arrangedbaffle plates, the lower one of which is disposed directly above theupper convergent ends of said vertical steam pipes, substantially as setforth.

13. In a combined feed water heater and purifier, the casing having abottom steam 1nlet, the water heating, filtering and collecting devicesarranged above said inlet, a transverse filterlocated below the steaminlet and forming there-below an oil chamber, a suitably arranged watertank having an upper siphon inlet pipe having the short'leg thereofdisposed near to the bottom of the oil chamber, and a bottom dischargepipe leading up into the top of said casing, said water tank beingfurther provided with an off-standing valve casing connected with a livesteam supply pipe and having an interior valve seat, a normally springclosed valve working at one side of said valve seat, a float guided forvertical movement inside of said water tank, and suitable leverconnections between said fioat and said valve substantially as setforth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

FRANK DIEHL.

Witnesses: e

W. D. VAN ALLEN, A. J. MALLMANN.

